Had Aduarte written that the first books printed at Manila were two Doctrinas issued by the Dominicans at San Gabriel in 1593, and given some details of their production, we could conclude our study with a quotation from him, but nowhere does he mention them. In fact, his inference was that the first book was that printed for Blancas de San Jose, and yet we know that this Doctrina preceded anything that Blancas de San Jose could have written, since he did not come to the Philippines until 1595. We can assume, as Retana did, that by printing Aduarte meant printing from movable type, but this does not explain away the fact that Aduarte, who recorded in detail events of far less significance, did not speak of the Doctrinas at all. The best--and it is a most unsatisfactory best--that we can do is ascribe the omission to the frailty of man, and record that there is no notice of the Dominican Doctrina of 1593 in the most complete contemporary Dominican history of the Philippines. The first members of the Order of St. Dominic [95] to land in the Philippines were Bishop Salazar and his assistant, Christoval de Salvatierra. But they were fully occupied with the administration of the bishopric and could not devote themselves to regular missionary work. It was not until July 25, 1587 that working Dominican missionaries came. Then fifteen [96] under the leadership of Juan de Castro arrived, and established the first Dominican province [97] of the Philippines and China, thus consummating the hope expressed as early as 1579. [98]